Journal
JOURNAL OF POWER SOURCES
Volume 178, Issue 2, Pages 765-768Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2007.12.081
Keywords
lithium secondary battery; lithium metal battery; dendrite formation; lithium deposition; voltage gradient
Funding
- Korea Institute of Industrial Technology(KITECH) [2006-N-PV12-P-02] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Ministry of Trade, Industry & Energy (MOTIE), Republic of Korea [06-최-24] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In a lithium secondary battery, the effect of the current rate affect on dendritic growth has been established. In the present, a series of experiments was conducted at a constant current rate, but at various the cell internal resistances. Different temperatures at -5 degrees C, 15 degrees C, and 35 degrees C were applied to change the internal resistance. The present experiment found that as the resistance was varied, the voltage gradient also varied and accordingly to maintain a constant current rate, and that the Sand's time was measured differently at such varying voltage gradients. That voltage was also decreased together with the resistance to apply a constant current density results from Ohm's law. It was found that even if the current density remains constant, the size of the area where dendrites are generated will vary in accordance with the theory of solidification. (C) 2008 Elsevier B.V. All rights reserved.
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